As usual, static request means nothing, dynamic request that uses database are the real bottleneck :3
Btw Iris has book for those who are interested. For those who doesn't need full framework, you can use the fasthttprouter.

EDIT: before you use Iris because of performance, see links on the comments below: this by julienschmidt (one that create httprouter) and this by dlsniper (one that initialize go-lang-idea-plugin project).